Marcelo Ribeiro leads the Offensive Security Special Ops team at Hewlett Packard Enterprise (HPE) with 20+ years of cybersecurity experience across HPE, Microsoft, IBM, and the Brazilian Navy. A former Navy Officer, he helped build Brazil’s Naval Cybersecurity capabilities and led IBM’s DFIR practice in Latin America. At HPE, Marcelo develops advanced offensive security programs, leveraging Kubernetes infrastructure and AI to enhance offensive operations and harden cyber defenses. He has presented at DEF CON 2024 and various security conferences, sharing expertise on red teaming, cloud security, and Kubernetes exploitation. Recognized in the EC-Council CEH Hall of Fame (2023), Marcelo holds CISSP, CISM, OSCP, GXPN, GPEN, GWAPT, GAWN, GRID, GREM, GCIH, GCIA, and more. Passionate about pushing offensive security boundaries, he thrives on tackling new adversarial challenges in modern cloud environments.